Amazon's new textbook rental program can save college students lots of cash each semester. The company will lend you a book for 130 days, with two-day shipping for Amazon Student members and free return shipping.

Although you can buy cheap used textbooks on Amazon and several other sites, if you don't plan on keeping the textbooks after your course is done, renting may be more affordable. A textbook that sells for $170 might rent for around $50 versus being sold used on Amazon for $115.